diff options
Diffstat (limited to 'libavcodec/mpeg12enc.c')
| -rw-r--r-- | libavcodec/mpeg12enc.c | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c index b0175b1fc8..ae71b8ec0b 100644 --- a/libavcodec/mpeg12enc.c +++ b/libavcodec/mpeg12enc.c @@ -3,20 +3,20 @@ * Copyright (c) 2000,2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -33,9 +33,10 @@ #include "mpeg12.h" #include "mpeg12data.h" #include "bytestream.h" - #include "libavutil/log.h" #include "libavutil/opt.h" +#include "libavutil/avassert.h" +#include "libavutil/timecode.h" static const uint8_t inv_non_linear_qscale[13] = { 0, 2, 4, 6, 8, @@ -166,11 +167,24 @@ static av_cold int encode_init(AVCodecContext *avctx) } } + s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE); + if (s->drop_frame_timecode) + s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME; if (s->drop_frame_timecode && s->frame_rate_index != 4) { av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n"); return -1; } + if (s->tc_opt_str) { + AVRational rate = avpriv_frame_rate_tab[s->frame_rate_index]; + int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s); + if (ret < 0) + return ret; + s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME); + s->avctx->timecode_frame_start = s->tc.start; + } else { + s->avctx->timecode_frame_start = 0; // default is -1 + } return 0; } @@ -284,13 +298,9 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start; s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number; - if (s->drop_frame_timecode) { - /* only works for NTSC 29.97 */ - int d = time_code / 17982; - int m = time_code % 17982; - //if (m < 2) m += 2; /* not needed since -2,-1 / 1798 in C returns 0 */ - time_code += 18 * d + 2 * ((m - 2) / 1798); - } + av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME)); + if (s->drop_frame_timecode) + time_code = av_timecode_adjust_ntsc_framenum(time_code); put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24)); put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60)); put_bits(&s->pb, 1, 1); @@ -321,7 +331,7 @@ static av_always_inline void put_qscale(MpegEncContext *s) } void ff_mpeg1_encode_slice_header(MpegEncContext *s){ - if (s->height > 2800) { + if (s->codec_id == CODEC_ID_MPEG2VIDEO && s->height > 2800) { put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127)); put_bits(&s->pb, 3, s->mb_y >> 7); /* slice_vertical_position_extension */ } else { @@ -921,6 +931,7 @@ static void mpeg1_encode_block(MpegEncContext *s, #define OFFSET(x) offsetof(MpegEncContext, x) #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM #define COMMON_OPTS\ + { "gop_timecode", "MPEG GOP Timecode in hh:mm:ss[:;.]ff format", OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, VE },\ { "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\ { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \ { "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE }, @@ -961,7 +972,7 @@ AVCodec ff_mpeg1video_encoder = { .supported_framerates = avpriv_frame_rate_tab+1, .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE }, - .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, + .capabilities = CODEC_CAP_DELAY, .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), .priv_class = &mpeg1_class, }; |